package com.lvhengchang.mapper;

import com.baomidou.mybatisplus.core.mapper.BaseMapper;
import com.lvhengchang.domain.User;
import org.apache.ibatis.annotations.Mapper;

@Mapper
public interface UserMapper extends BaseMapper<User> {
    /**
     * 根据用户ID查询用户信息
     * 
     * @param userId 用户ID
     * @return 用户对象
     */
    User selectUserByExchangeId(String userId);
}
